OrderRollupApp.java

package dev.trly.java.example.primitive.wrappers;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public final class OrderRollupApp {
    private static final Logger LOGGER = LoggerFactory.getLogger(OrderRollupApp.class);

    private OrderRollupApp() {
    }

    public static void main(String[] args) {
        final Integer[] boxCounts = {
            new Integer(4),
            new Integer(7),
            new Integer(3),
            new Integer(5)
        };
        final Long[] orderValues = {
            new Long(1299L),
            new Long(2450L),
            new Long(875L),
            new Long(1625L)
        };

        int totalBoxes = 0;
        long totalCents = 0L;
        for (int index = 0; index < boxCounts.length; index++) {
            final int boxes = boxCounts[index].intValue();
            final long cents = orderValues[index].longValue();
            totalBoxes += boxes;
            totalCents += cents;
            LOGGER.info("Order {}: {} boxes, ${}", index + 1, boxes, String.format("%.2f", cents / 100.0));
        }

        LOGGER.info("Shipped {} boxes for ${}", totalBoxes, String.format("%.2f", totalCents / 100.0));
    }

    public static Integer calculatePackingUnits(int boxesPerOrder, int orderCount) {
        return new Integer(boxesPerOrder * orderCount);
    }

    public static Long estimateShippingCents(long baseCents, int boxCount) {
        final Long perBoxCents = new Long(baseCents);
        final Long totalCents = new Long(perBoxCents.longValue() * boxCount);
        return new Long(totalCents.longValue());
    }
}